Limit the pixmap cache in space as well as in time.

QTBUG-12590
(cherry picked from commit 1fc6cab93ba2d067fadcd0979640c32aa1d5ae4a)

2 files changed, 40 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativepixmapcache/data/massive.png b/tests/auto/declarative/qdeclarativepixmapcache/data/massive.png
new file mode 100644
index 0000000000..bc6cc9e6ca
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativepixmapcache/data/massive.png
diff --git a/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp b/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
index 0c7780ce97..16d206345e 100644
--- a/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
+++ b/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
@@ -70,6 +70,7 @@ private slots:
     void single_data();
     void parallel();
     void parallel_data();
+    void massive();
 
 private:
     QDeclarativeEngine engine;
@@ -276,6 +277,45 @@ void tst_qdeclarativepixmapcache::parallel()
     qDeleteAll(pixmaps);
 }
 
+void tst_qdeclarativepixmapcache::massive()
+{
+    QUrl url = thisfile.resolved(QUrl("data/massive.png"));
+
+    // Confirm that massive images remain in the cache while they are
+    // in use by the application.
+    {
+    qint64 cachekey = 0;
+    QDeclarativePixmap p(0, url);
+    QVERIFY(p.isReady());
+    QVERIFY(p.pixmap().size() == QSize(10000, 1000));
+    cachekey = p.pixmap().cacheKey();
+
+    QDeclarativePixmap p2(0, url);
+    QVERIFY(p2.isReady());
+    QVERIFY(p2.pixmap().size() == QSize(10000, 1000));
+
+    QVERIFY(p2.pixmap().cacheKey() == cachekey);
+    }
+
+    // Confirm that massive images are removed from the cache when
+    // they become unused
+    {
+    qint64 cachekey = 0;
+    {
+        QDeclarativePixmap p(0, url);
+        QVERIFY(p.isReady());
+        QVERIFY(p.pixmap().size() == QSize(10000, 1000));
+        cachekey = p.pixmap().cacheKey();
+    }
+
+    QDeclarativePixmap p2(0, url);
+    QVERIFY(p2.isReady());
+    QVERIFY(p2.pixmap().size() == QSize(10000, 1000));
+
+    QVERIFY(p2.pixmap().cacheKey() != cachekey);
+    }
+}
+
 QTEST_MAIN(tst_qdeclarativepixmapcache)
 
 #include "tst_qdeclarativepixmapcache.moc"